Maryland Open champ Gary Marlowe of Woodmont was 10 under par in winning two matches and veteran Perky Cullinane of Columbia collected 11 birdies as both gained today's quarterfinals of the District Amateur golf tournament at Kenwood.

Marlowe, at 19 the youngest ever to win the Maryland Open, eagled the seventh hole for the second straight day and eliminated Paul Ryan of Congressional, 2 and 1, in the morning. In the afternoon, the reed-thin long hiter buried Litz Beavers of Washingtonian in a barrage of birdies, 5 and 4.

Beavers, a weekend player with a five handicap, pulled the upset of the day. He played his final 15 holes of the morning round in three under par and surprised 1973 Maryland Open titlist and comedalist Henri deLozier of Columbia 2 and 1.

Cullinane, 43, a two-time District winner, sidelined Pat McCarty of Belle Haven, 4 and 3, and Steve Ranney of Springfield, 5 and 4.

Jim Millar of Washington, comedalist at 69 with Cullinane, deLozier, and Barry McCarty, also won twice. He beat Ron Rhodes of Kenwood, 3 and 2, and recent Churchill High grad Bruce Slattery of Century XXI in 20 holes.

McCarty lost to Kenwood's Dick Schmidt, 1 up, in the morning.